I am a new Mac user, and I bought a mac for the main purpose of video editing. However, all my files are MPEG2, and so far, I have had a very frustrating experience with trying to figure out how to play it back on Quicktime with Audio. I downloaded Pro, as well as the MPEG2 add on. It plays video fine, but can someone please tell me how to get it to play audio step by step? Lastly, I have Final Cut and iTunes and audio won't play with the video there either. I am assuming once I have it fixed in quicktime, it will work in all other programs too?